Align 3GX issue

[stunks]

I have set up the 3gx system on a 700 for one of my friends, before i explain the 700 was flying and had the align 3g system on it, anyway i notice with the 3gx on the 700 as the tank gets empty the heli keeps comming back thought it was the gain at first so i did some ajjustments and nothing when the tank is full the heli will stay there perfectly level almost hands off but as tank gets low its coming back. The COG is spot on so i know it has nothing to do with that and like i said i have played with the gains but hasnt solve the problem, so has anyone else been having this problem if so how did u solve it if u have.

[millerman]

dude the best thing to do is get the cog setup with half a tank of fuel and then test it

[stunks]

dude the best thing to do is get the cog setup with half a tank of fuel and then test it

done that already

[stunks]

seems like am not the only one having this problem

Align 3GX issue - HeliFreak

[coolice]

Hey.

Unfortunately I currently only have a 3GX installed on my 450 PRO and not a larger bird, so cannot say if I have or experience this quirk myself.

I would hasten a guess that you have gone through DIR setup once more to make sure all is correct, did you perhaps also reflash the V1.1 firmware just in case?

Seems strange it only does it as the fuel level lowers, one would say if it was a COG problem then with a full tank it would be out of trim in the opposite direction.

Out of interest as you're tank gets lower the engine isn't leaning out and producing more vibration, which in turn then upsets the gyros and causes this strange problem? I know FBL units are not keen on vibes and that any drifting is usually caused by vibrations somewhere on the model.
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